What I'm Trying to do:
Move files from a central location to the appropriate NAS volume based on the initial letter of the show (that works)
Place the Files in Alphabetical Folders (# & A-Z) according to the Absolute First Letter of the Show (problems)
Then Place in a folder by show name (Works)
Then Sub divide into Season (Works)
Then Rename to my preferred Episode Title Format (Works)

The Problem:
The {az} binding is the only method I can see to extract the first letter of the Show NAme, but it is ignoring the Word "The" and using the first letter of the next word (and presumably such words as "a"). The drive sorting method is using the Absolute first letter just fine, but as far as I can tell you can't use functions such as {n.Left(1)} (I've tried)

Also to make matters worse, I cannot test my expressions on a representative filename (ie, an episode of "The Walking Dead") because Filebot will not allow me to change the Expression sample from Firefly (the boxes are greyed out). I can select a file and so on, but it will not change the sample from the default.

I can see a possibility of achieving this by 27 individual {n =~ /^(?i)[a-a]/ ? 'A' : n =~ /^(?i)[b-b]/ ? 'B' statements, but if there is a better way, I would prefer not to, as I intend to come back and update this expression as and when I re-organise / expand my NAS volumes and I'd rather it was easier to read.

I've scoured the forum for hours and experimented, but I'm getting nowhere. Please help